English: Size of the Mongolian titanosaur Opisthocoelicaudia, which may be synonymous with the coeval Nemegtosaurus. Opisthocoelicaudia is only definitely known from a neckless, headless specimen, while Nemegtosaurus is only definitely known from a skull. Nemegtosaurus has been used to restore the skull here (and is illustrated to scale, as is the postcranium). The neck was very roughly based on Hartman's skeletal. Human silhouette from File:Silhouette of man standing and facing forward.svg (CC0).

References

• Borsuk-Białynicka, M. M. (1977). "A new camarasaurid sauropod Opisthocoelicaudia skarzynskii gen. n., sp. n. from the Upper Cretaceous of Mongolia". Palaeontologia Polonica 37 (5): 5–64.
• Wilson, J.A. (2005). "Redescription of the Mongolian sauropod Nemegtosaurus mongoliensis Nowinski (Dinosauria: Saurischia) and comments on Late Cretaceous sauropod diversity". Journal of Systematic Palaeontology 3 (3): 283–318.
• Skeletal diagram by Scott Hartman